.tx {
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 2px solid white;
    border-radius: 30px;
    text-shadow: 0 0 6px red;
    vertical-align: middle;
}

/* 头像 */

#tx {
    vertical-align: middle;
}

/* id选择器 头像的 */

.navbar {
    height: 40px;
    line-height: 40px;
    text-align: center;
}

.navbar a {
    padding: 0 5px;
    padding-top: 30px;
}

.fr a:nth-child(-n+2) {
    color: black;
}

.usebar {
    padding: 0;
}

.usebar button {
    width: 100px;
    height: 30px;
    background-color: rgb(98, 121, 145);
    border: none;
    float: left;
}

.querybar {
    flex: left;
}

.querybar a {
    vertical-align: middle;
}

.querybar p {
    display: inline-block;
}

.querybar button {
    background-color: #436ae9;
    width: 100px;
    height: 30px;
}

.querybar input:nth-child(5) {
    width: 15px;
}

tbody>tr:nth-child(2n+1) {
    background-color: #1a2634;
}

tbody>tr:nth-child(2n) {
    background-color: #2a3d4c;
}